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How long would a 60 watt light bulb have to burn to produce the energy you used climbing the stairs?
If you weigh 70 kg and the stairs are 3 metres high, the energy needed is 70 x 9.8 x 3 Joules or 2058 joules. That would keep a 60 w bulb going for 2058/60 seconds, or 34.3 seconds.
But to produce that same energy in a generating plant, the fuel energy wasted in the process would be between 2000 joules for a gas plant of 50% efficiency, and 6000 joules for a coal plant of 25% efficiency.
What else can I help you with?
The capacity to do work or produce light is known as?
energy
Is the moon giving off light energy?
Yes but not in the way you are thinking. The Moon reflects light but does not produce it's own energy.
Name the energy changes that occur to produce light in?
Chemical energy is converted into electromagnetic energy in the form of light.
Low heat light bulbs produce less light but save on energy costs true or false?
False. Low heat light bulbs can produce the same amount of light, and also save on energy.
Do plants need light to mature?
Yes, plants need light to mature because light is essential for photosynthesis, the process by which plants convert light energy into chemical energy to produce food. Without sufficient light, plants cannot produce the energy they need to grow and develop properly.
Is climbing up the stairs good for the body?
Using the stairs is a simple and convenient form of light exercising.
What are 3 sources of energy that can cause light emissions?
Chemical energy will produce the light in a firefly, or in a hand-held glow tube. Electrical energy will produce the light in a light bulb. Heating something up to a high enough temperature will produce light. Burning a material may produce light.
What kind of energy does the sun produce?
The sun produce light and nuclear energy
What types of energy can flashlights produce?
Flashlight produce light energy and heat after turning on.
Does a toaster produce light energy?
No, a toaster does not produce light energy. Toaster heats up bread using electrical energy which is converted to heat energy for the toasting process.
The capacity to do work or produce light is?
The capacity to do work is energy. The capacity to produce light is luminosity.
The capacity to do work or produce light is known as?
energy
What is form of energy that can produce heat and light?
This type of energy is called current electricity
How does your power in climbing a flight of stairs compare with the power of a 100 W light bulb?
One joule is the amount of energy required to apply a force of one newton through a distance of one meter (one newton-meter), or it is the amount of energy required to produce one watt of power for one second (one watt-second).If we assume that you have a mass of 200 pounds or 91 kilograms, then it requires a force of 891 newtons (91 * 9.82) to support you. This force will be the same whether you are standing still or climbing, even though it will momentarily change when you accelerate, so we can use 891 newtons.If we then assume that a flight of stairs is about 3 meters, we can calculate the power to climb up at 891 * 3 = 2672 joules per flight.Lets look at the light bulb. That one is easy. 100 watts is 100 joules per second.Now the question is, how fast can you climb? Let assume 10 seconds per flight of stairs. That translates to 267 joules per second, so you use nearly three times the energy of a 100 watt light bulb to climb stairs. (Two times, if you climb a little bit slower.)
Is the moon giving off light energy?
Yes but not in the way you are thinking. The Moon reflects light but does not produce it's own energy.
Name the energy changes that occur to produce light in?
Chemical energy is converted into electromagnetic energy in the form of light.
Why do plants grow to the light?
Plants phtosynthesise to produce energy. Photosynthesis involves turning light energy into chemical energy (glucose) so plants grow towards light so that they can absorb more light and therefore produce more energy that they use to grow etc.
